Endovascular system with circumferentially-overlapping stent-grafts
First Claim
1. Apparatus comprising a multi-component endovascular stent-graft system, which has proximal and distal ends, and a body portion disposed along at least a part of the stent-graft system longitudinally between the proximal and distal ends, which body portion has an axial length and comprises a plurality of stent-grafts, which (a) are configured to assume respective radially-compressed states for transluminal delivery, and respective radially-expanded states for intraluminal fixation, and (b) comprise:
- respective stent members, which are shaped, when the stent-grafts are in their respective radially-expanded states, so as to define respective tubes, each of which is circumferentially-complete at least one longitudinal location therealong; and
respective graft members, which respectively comprise one or more biologically-compatible substantially blood-impervious flexible sheets, and which are securely fixed to the stent members, respectively, such that the graft members circumscribe respective circumferential arcs of the respective stent members, which circumferential arcs have respective extents that are less than entire circumferences of the respective stent members at least partially along respective axial lengths of the stent members, when the stent-grafts are in their respective radially-expanded stateswherein the graft members collectively cover an entire circumference of the body portion and define a circumferentially-closed volume along the entire axial length of the body portion, when (a) the stent-grafts are nested within one another along the entire axial length of the body portion, with predefined rotational and axial relationships therebetween, and (b) the stent-grafts are in their respective radially-expanded states.
2 Assignments
0 Petitions
Accused Products
Abstract
A multi-component endovascular stent-graft system (10) includes a body portion (16), which includes a plurality of stent-grafts (20), which include: (a) respective stent members (22), which are shaped, when the stent-grafts (20) are in respective radially-expanded states, so as to define respective tubes, each of which is circumferentially complete at at least one longitudinal location therealong; and (b) respective graft members (24), which circumscribe respective circumferential arcs (40) of the respective stent members (22). The circumferential arcs (40) have respective extents that are less than entire circumferences of the respective stent members (22) at least partially along respective axial lengths of the stent members (22).
-
Citations
31 Claims
-
1. Apparatus comprising a multi-component endovascular stent-graft system, which has proximal and distal ends, and a body portion disposed along at least a part of the stent-graft system longitudinally between the proximal and distal ends, which body portion has an axial length and comprises a plurality of stent-grafts, which (a) are configured to assume respective radially-compressed states for transluminal delivery, and respective radially-expanded states for intraluminal fixation, and (b) comprise:
-
respective stent members, which are shaped, when the stent-grafts are in their respective radially-expanded states, so as to define respective tubes, each of which is circumferentially-complete at least one longitudinal location therealong; and respective graft members, which respectively comprise one or more biologically-compatible substantially blood-impervious flexible sheets, and which are securely fixed to the stent members, respectively, such that the graft members circumscribe respective circumferential arcs of the respective stent members, which circumferential arcs have respective extents that are less than entire circumferences of the respective stent members at least partially along respective axial lengths of the stent members, when the stent-grafts are in their respective radially-expanded states wherein the graft members collectively cover an entire circumference of the body portion and define a circumferentially-closed volume along the entire axial length of the body portion, when (a) the stent-grafts are nested within one another along the entire axial length of the body portion, with predefined rotational and axial relationships therebetween, and (b) the stent-grafts are in their respective radially-expanded states. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 24, 25, 26, 27, 28, 29, 30, 31)
-
-
18. A method comprising:
-
(i) providing a multi-component endovascular stent-graft system, which has proximal and distal ends, and a body portion disposed along at least a part of the stent-graft system longitudinally between the proximal and distal ends, which body portion has an axial length and comprises a plurality of stent-grafts, which (a) are configured to assume respective radially-compressed states for transluminal delivery, and respective radially-expanded states for intraluminal fixation, and (b) include (x) respective stent members, which are shaped, when the stent-grafts are in their respective radially-expanded states, so as to define respective tubes, each of which is circumferentially-complete at least one longitudinal location therealong, and (y) respective graft members, which respectively comprise one or more biologically-compatible substantially blood-impervious flexible sheets, and which are securely fixed to the stent members, respectively, such that the graft members circumscribe respective circumferential arcs of the respective stent members, which circumferential arcs have respective extents that are less than entire circumferences of the respective stent members at least partially along respective axial lengths of the stent members, when the stent-grafts are in their respective radially-expanded states; (ii) transvascularly introducing a first one of the stent-grafts into a blood vessel of a human subject, while the stent-graft is restrained in its radially-compressed state; (iii) thereafter, deploying the first stent-graft in the blood vessel so that the first stent-graft assumes its radially-expanded state; (iv) thereafter, introducing another one of the stent-grafts into the blood vessel and at least partially into the first stent-graft and any of the other stent-grafts already deployed, while the another stent-graft is restrained in its radially-compressed state; (v) thereafter, axially and rotationally orienting the another stent-graft with the first stent-graft and any of the other stent-grafts already deployed, and deploying the another stent-graft in the blood vessel so that the another stent-graft assumes its radially-expanded state; and (vi) thereafter, repeating steps (iv) and (v) until all of the stent-grafts have been deployed in the blood vessel wherein deploying the stent-grafts comprises deploying the stent-grafts such that the graft members collectively cover an entire circumference of the body portion and define a circumferentially-closed volume along the entire axial length of the body portion. - View Dependent Claims (19, 20, 21, 22, 23)
-
Specification